Catalytic Allylic C−H Acetoxylation and Benzoyloxylation via Suggested (η<sup>3</sup>-Allyl)palladium(IV) Intermediates
作者:Lukasz T. Pilarski、Nicklas Selander、Dietrich Böse、Kálmán J. Szabó
DOI:10.1021/ol9023369
日期:2009.12.3
Palladium-catalyzed allylic acetoxylations and benzoyloxylations were carried out using iodonium salts. The reactions proceed under mild conditions with high regio- and stereoselectivity. The catalysis can be performed under both acidic and nonacidic conditions without use of BQ or other external oxidants and activator ligands. Deuterium labeling experiments clearly show that the catalytic reaction
使用碘鎓盐进行钯催化的烯丙基乙酰氧基化和苯甲酰氧基化。反应在温和条件下以高区域选择性和立体选择性进行。该催化反应可以在酸性和非酸性条件下进行,而无需使用BQ或其他外部氧化剂和活化剂配体。氘标记实验清楚地表明,通过(η催化反应进行3 -烯丙基)钯中间体。用一种催化剂进行的化学计量研究为形成Pd(IV)物种提供了证据。